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Here are the thread stacks: Java-level deadlock has been detected This means that some threads are blocked waiting to enter a synchronization block or waiting to reenter a synchronization block after an Object.wait() call, where each thread owns one monitor while trying to obtain another monitor already held by another thread. Deadlock: AWT-EventQueue-0 is waiting to lock java.util.concurrent.locks.ReentrantLock$FairSync@78a07411 which is held by Code Completion Code Completion is waiting to lock org.netbeans.modules.editor.completion.CompletionImpl@59bc1e2d which is held by AWT-EventQueue-0 Thread stacks AWT-EventQueue-0 [WAITING] sun.misc.Unsafe.park(native method) java.util.concurrent.locks.LockSupport.park(LockSupport.java:186) java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834) java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:867) java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1197) java.util.concurrent.locks.ReentrantLock$FairSync.lock(ReentrantLock.java:229) java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:290) org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:190) org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104) org.netbeans.modules.editor.java.LazyTypeCompletionItem.accept(LazyTypeCompletionItem.java:116) org.netbeans.modules.editor.completion.CompletionImpl$1.accept(CompletionImpl.java:142) org.netbeans.modules.editor.completion.CompletionImpl.requestShowCompletionPane(CompletionImpl.java:956) org.netbeans.modules.editor.completion.CompletionImpl.finishNotify(CompletionImpl.java:1453) org.netbeans.modules.editor.completion.CompletionResultSetImpl.finish(CompletionResultSetImpl.java:274) org.netbeans.spi.editor.completion.CompletionResultSet.finish(CompletionResultSet.java:245) org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.filter(JavaCompletionProvider.java:417) org.netbeans.spi.editor.completion.support.AsyncCompletionTask.refreshImpl(AsyncCompletionTask.java:198) org.netbeans.spi.editor.completion.support.AsyncCompletionTask.refresh(AsyncCompletionTask.java:149) org.netbeans.modules.editor.completion.CompletionImpl.refreshResultSets(CompletionImpl.java:1670) org.netbeans.modules.editor.completion.CompletionImpl.access$2800(CompletionImpl.java:110) org.netbeans.modules.editor.completion.CompletionImpl$Result.invokeRefresh(CompletionImpl.java:1790) org.netbeans.modules.editor.completion.CompletionImpl.completionRefresh(CompletionImpl.java:741) org.netbeans.modules.editor.completion.CompletionImpl.caretUpdate(CompletionImpl.java:374) javax.swing.text.JTextComponent.fireCaretUpdate(JTextComponent.java:407) javax.swing.text.JTextComponent$MutableCaretEvent.fire(JTextComponent.java:4417) javax.swing.text.JTextComponent$MutableCaretEvent.stateChanged(JTextComponent.java:4439) org.netbeans.editor.BaseCaret$5.run(BaseCaret.java:958) java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251) java.awt.EventQueue.dispatchEventImpl(EventQueue.java:721) java.awt.EventQueue.access$200(EventQueue.java:103) java.awt.EventQueue$3.run(EventQueue.java:682) java.awt.EventQueue$3.run(EventQueue.java:680) java.security.AccessController.doPrivileged(native method) java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) java.awt.EventQueue.dispatchEvent(EventQueue.java:691) org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) java.awt.EventDispatchThread.run(EventDispatchThread.java:91) Code Completion [BLOCKED; waiting to lock org.netbeans.modules.editor.completion.CompletionImpl@59bc1e2d] org.netbeans.modules.editor.completion.CompletionImpl.documentationCancel(CompletionImpl.java:1183) org.netbeans.modules.editor.completion.CompletionImpl.hideDocumentation(CompletionImpl.java:1200) org.netbeans.modules.editor.completion.CompletionImpl.hideDocumentation(CompletionImpl.java:1196) org.netbeans.api.editor.completion.Completion.hideDocumentation(Completion.java:124) org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$5.call(JavaCompletionProvider.java:607) org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$5.call(JavaCompletionProvider.java:600) org.netbeans.modules.java.source.JavadocHelper.doGetJavadoc(JavadocHelper.java:320) org.netbeans.modules.java.source.JavadocHelper.getJavadoc(JavadocHelper.java:237) org.netbeans.modules.java.source.JavadocHelper.getJavadoc(JavadocHelper.java:216) org.netbeans.api.java.source.ui.ElementJavadoc.<init>(ElementJavadoc.java:346) org.netbeans.api.java.source.ui.ElementJavadoc.create(ElementJavadoc.java:158) org.netbeans.modules.editor.java.JavaCompletionDoc.create(JavaCompletionDoc.java:90) org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.resolveDocumentation(JavaCompletionProvider.java:600) org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.run(JavaCompletionProvider.java:431) org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$Task.run(JavaCompletionProvider.java:5217) org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:584) org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153) org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137) org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201) org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:198) org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176) org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360) org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74) org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:198) org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104) org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.query(JavaCompletionProvider.java:297) org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:223) org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454) org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2048)
Fixed in jet-main. http://hg.netbeans.org/jet-main/rev/e895c098916c
Integrated into 'main-golden', will be available in build *201301170001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-golden/rev/e895c098916c User: Dusan Balek <dbalek@netbeans.org> Log: Issue #224938: Deadlock AWT-EventQueue-0 <-> Code Completion - fixed.
The patch seem fine to me.
verified in trunk
release73: http://hg.netbeans.org/releases/rev/8f9f0168714b
Integrated into 'releases', will be available in build *201301182100* or newer. Wait for official and publicly available build. Changeset: http://hg.netbeans.org/releases/rev/8f9f0168714b User: Dusan Balek <dbalek@netbeans.org> Log: Issue #224938: Deadlock AWT-EventQueue-0 <-> Code Completion - fixed.
v.
*** Bug 225412 has been marked as a duplicate of this bug. ***
*** Bug 225235 has been marked as a duplicate of this bug. ***
*** Bug 225882 has been marked as a duplicate of this bug. ***